1AXT

IMMUNE VERSUS NATURAL SELECTION: ANTIBODY ALDOLASES WITH THE RATES OF NATURAL ENZYMES

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2CGR

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.4		PROTEIN WAS CRYSTALLIZED FROM 18% PEG 4000, 10% ISOPROPANOL, 100 MM HEPES, PH 7.4.

Crystal Properties
Matthews coefficient	Solvent content
2.45	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 56.5	α = 90
b = 65.3	β = 90
c = 132.6	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	97	IMAGE PLATE	MARRESEARCH	PT COATED FUSED SILICA X-RAY MIRROR	1996-05-22	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL7-1		SSRL	BL7-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2.15	40	96.1	0.065	25	10		26432		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.15	2.23	95		0.302	5.6	3.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	2CGR	2.15	10	26080	1304	96.1	0.2144	0.2108		0.3167	EVERY 20TH REFLECTION

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
	3233	3556

RMS Deviations
Key	Refinement Restraint Deviation
s_from_restr_planes	0.324
s_zero_chiral_vol	0.088
s_non_zero_chiral_vol	0.082
s_similar_adp_cmpnt	0.068
s_angle_d	0.021
s_anti_bump_dis_restr	0.015
s_bond_d	0.005
s_similar_dist
s_rigid_bond_adp_cmpnt
s_approx_iso_adps

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3350
Nucleic Acid Atoms
Solvent Atoms	248
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
MERLOT	phasing
SHELXL-96	refinement

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.